// Multiple file selector by Stickman -- http://www.the-stickman.com 
// with thanks to: [for Safari fixes] Luis Torrefranca -- http://www.law.pitt.edu and Shawn Parker & John Pennypacker -- http://www.fuzzycoconut.com [for duplicate name bug] 'neal'
function MultiSelector( list_target, max ){
    this.list_target = list_target;
    this.count = 0;
    this.id = 0;
    if( max ){
        this.max = max;
        } 
    else {
        this.max = -1;
        };
    this.addElement = 
        function( element ){
            if( element.tagName == 'INPUT' && element.type == 'file' ){
                element.name = 'file_' + this.id++;
                element.multi_selector = this;
                element.onchange = function(){
                    var new_element = document.createElement( 'input' );
                    new_element.type = 'file';
                    this.parentNode.insertBefore( new_element, this );
                    this.multi_selector.addElement( new_element );
                    this.multi_selector.addListRow( this );
                    this.style.position = 'absolute';
                    this.style.left = '-1000px';
                    };
                if( this.max != -1 && this.count >= this.max ){
                    element.disabled = true;
                    };
                this.count++;
                this.current_element = element;
                } 
            else {
                alert( 'Error: not a file input element' );
                };
            };
    this.addListRow = function( element ){
        var new_row = document.createElement( 'div' );
        var new_row_button = document.createElement( 'input' );
        new_row_button.type = 'button';
        new_row_button.value = 'Delete';
        new_row.element = element;
        new_row_button.onclick= function(){
            this.parentNode.element.parentNode.removeChild( this.parentNode.element );
            this.parentNode.parentNode.removeChild( this.parentNode );
            this.parentNode.element.multi_selector.count--;
            this.parentNode.element.multi_selector.current_element.disabled = false;
            return false;
            };
        new_row.innerHTML = element.value;
        new_row.appendChild( new_row_button );
        this.list_target.appendChild( new_row );
        };
    };